Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Retractable Main Drive Sealing Device for Large Diameter TBM

A technology of sealing device and shield machine, which is applied to mining equipment, earthwork drilling, tunnels, etc., and can solve the problem of increased risk of cutterhead being stuck

Active Publication Date: 2018-09-04
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of the excavation section, the number of cutter heads increases, and the risk of cutter head being stuck increases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Retractable Main Drive Sealing Device for Large Diameter TBM

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0014] A telescopic main drive sealing device of a large diameter shield machine, such as figure 1 As shown, a sealing snap ring 3 is fixed at the lower part of the shield body 9, and an airbag seal 6 is provided at the lower part of the sealing snap ring 3, which can be inflated to the airbag seal 6 from the outside to realize the shield 9 and the drive box 10 under emergency conditions. seal. A sealing spacer ring 4 is fixed on the se...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a telescopic main drive sealing device of a larger-diameter shield machine, wherein a sealing clamp ring is fixedly arranged at the lower part of a shield body, an air bag seal is arranged at the lower part of the sealing clamp ring, a sealing caulking ring is fixed on the sealing clamp ring, lip seals are nested at the lower part of the sealing caulking ring, the lip seals are closely contacted with a driving box, and the lip seals are positioned in front of the air bag seal; a sealing pressure ring is fixed at the front side of the sealing clamp ring, a snap ring is fixed at the upper part of the sealing pressure ring, the upper part of the snap ring is in clamp connection with the lower part of the shield body, a slag removal plate is fixed at the lower part of the sealing pressure ring by a pressing plate, and the lower part of the slag removal plate is arranged on the driving box. The upper part of the telescopic main drive sealing device is clamped at the lower part of the shield body, and the residue soil or mud in a soil chamber can be sealed in a main drive stretching process by means of enabling the lip seals or air bag seal to be connected with the driving box; furthermore, a cutter is more conveniently replaced under a condition of atmospheric pressure or belt pressure, so that a cutter head of the shield machine is bailed out in case of emergency, and the shield machine is further enabled to carry out shield construction smoothly.

Description

Technical field [0001] The invention relates to the technical field of subway tunnel construction, in particular to a telescopic main drive sealing device of a large-diameter shield machine, which is mainly applied to composite or hard rock formations. Background technique [0002] With the progress of society, in order to relieve traffic pressure, underground traffic engineering is an important development direction of urban municipal engineering. At present, urban underground highway tunnels, road-rail tunnels and other national key engineering project tunnels are all large-diameter tunnels. Large-diameter earth pressure balance shields or mud-water balance shields are used for construction. The tunnel design diameter of related projects has exceeded 15 meters. [0003] Long-distance tunnels with super-large diameters (above 14m) constructed by the shield method have become the development trend of a new round of urban highway tunnel construction. As of 2014, a total of about 23...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 赵茜卓兴建常巍峰王杜娟贾连辉
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com